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J 1927- J. s'. ANDREWS WALL FURNACE Original Filed June 29, 1925Reilsued June 14, 1927.

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Original no. 1,582,051,

My. invention relates generally to improvements in householdheatingappliances and in particular to a wall heater or furnace, theprincipalobjects of my invention being 5 to general y improve upon andsimpll the construction of the existing forms 0 gas burning wallheaters, to provide a heater that is self-contained or of unitarystructure, thereby permitti its ready installatlon in la the wall of abui 'ng, and further to provide a wall heater of the character referredto that presents a neat and-finished appearance and which will be veryeffective in performing its intended functions.

Further objects of my invention are to construct the wall heater so thatthe cooler air from 'the lower portion of the room in which the heateris located and fresh air admitted through an opening in the floor above2 which the heater is located will be caused to circulate through thefurnace and be heated therein and in such heated condition be dischargedfrom openings in the upper portion of the furnace housing.

A further object of my invention is to" provide a heater, of the classdescribed, having novel means of continuously supplying fresh warm airto the room.

A further object is to provide a heater, of the class mentioned, wherebythe cooler air,

1 from thelower portion of the room in which the heater is located, isheated or re-heated by impingement against heated walls enclosing theback side of the heatin means, and whereby cold, fresh air is initia lyheated by passing through a slightly heated the heater.

A still further object is to provide a heater in which a portion of thegases of combustion from the heating means is continuously directed fromthe room.

' reissue med June 81, 1928. Serial No. 117,571;

Further, to provide a heater wherein gasv space positioned at the inneror back side of dated A ril 21, 1920, 8011.1 ll'o. 40,181, fled.June-2a, 1925. A lication m- A still further object of m invention is toprovide a'heater, of the c as described, in which the several partsare'simply and economically constructed, and whereby fuel consumptionwill he reduced to a minimum commensurate with heating capacity andeflicicnt fresh air ventilation.

With the foregoing and other objects in view, my invention consists incertain novel features of construction and arrangement of parts thatwill hereinafter be more fully described and claimed and illustrated inthe accompanying drawing, in which Fig. 1 is a front elevational view ofa wall furnace or heater of my improved construction.

- Fig. 2 is an enlarged vertical section taken approximatelyon the line22 of Fig. 1.

Fig. 3 is a horizontal section taken on the line 3-3 of Fig. 2.

Fig. 4 is a vertical section taken approximately on the line 4-4 of Fig.2.

Fig. 5 is a vertical section taken'throu h the upper portion of amodified form of t e furnace wherein the'burner chamber is provided witha vent.

Fig.7 6 is an elevational view partly in section of the flexiblemetaltube that forms a connection between the gaseous fuel supply pipeand thebnrner of my improved heater.

In preparing a space or chamber in a wall for the reception of myimproved heater, it is only necessary to arrange a header H,

I preferably a two by four, between a pair of wall studs S and -to forman air inlet opening 0 in the floor F'beneath the space or chamber. Theusual mopboards M are arranged on the wall in a convenient manner and agas supply pipe P is brought through the floor or through the opening 0into the giver portion of the furnace receiving chamr. y ,L I

The furnace or heater, which is selfcontained or of unitary structure inorder that it may be installed as a complete unit in the wall pocket orchamber. comprises an outer wall or plate 10, preferably of cast metaland having inclined flanges such as 11 on its sides, top and bottom andthe edges of which flanges are adapted to bear against the surface ofthe wall and pocket or chamber therein.

Formed in the inclined flange 11 at the top of the wall or vpanel 10 isa series of heated fresh air outlets 12 and formed in the wall or panelimmediately below these openings is a second series of heated air outletopenings 13. A third set of openings such as 14 is formed in the wall orpanel 10 below the openings 13 and at the lower portion of said wall orpanel is formed a fourth set of openings 15 which are for the admissionof cool air from the bottom of the room into the'lower portion of theheater.

Secured to the rear side of wall or panel 10 are the forward edges offlanges ,16 that extend forwardly from the top and side edges of a rearwall 17. This wall and its flanges are preferably of suitable sheetmetal that is covered or coated with asbestos or analogous fire-proofmaterial. Wall 17 0ccupies a position in the rear portion of the 'wall'pocket, while flanges 16 are positioned adjacent to the studs S andheader H.

Secured in any suitable manner to the rear side of wall or panel 10 is abox-like member preferably formed of sheet metal and comprising a rearwall 18, side flanges 19, a top flange 20 and a bottom flange 21. Thisrear wall 18 is spaced a slightdistance in front of wall 17 therebyproviding a narrow vertically disposed fresh air circulating and heatingchamber 22 between said walls 17 and 18, which chamber extends betweenthe side flanges 16 and 19 and the upper end of said heating chamberextends between the upper one of the flanges 16 and the top flange 20and communicates with the outlet openings 12 in flange 11 at the top ofplate 10.

Arranged in the lower portionof the space or. chamber within thebox-like structurea valve 26, and the operating handle 27 for said valveoccupies a position directly in frontof the lower portion of wall orpanlel 10.

p "The radiant heating elements 24 are positioned directly behind theseries of openings 1 1 and arranged behind and above and to the sides ofsaid radiantelements is a Wall 28 preferably of metal, the rear portionof which constitutes a reflector to throw heat from the radiant elementsforwardly through openings 14. The rear portion of wall 28 is spaced aslight distance in front of wall 18 thereby providing a verticallydisposed duct 29.0pen at its lower end and its upper end communicatingdirectly with the outlet openings 13.

' When my improved heater is in operation, the gaseous fuel that issuesfrom the jet orifices of the burner23 and burns in the radiant elements24 is admitted to said burner and controlled by proper manipulation ofvalve handle 27. Direct heat from the radiant elements will be reflectedforwardly through openings 14 by the rear portion of wall 28 andcomparatively cool air from the lower portion of the room in which theheater is located will, upon entering openings 15 and passing upwardlythrough duct 29, be heated as a result of its contact with the heatedwall 29 and in such heated condition this air will discharge throughopenings 13.

into the room to circulate upwardly therethrough. Simultaneously freshair from be neath-the floor F will enter opening 0 and circulateupwardly through duct 22 thereby becoming heated to a certain degree andin such heated condition this heated fresh air will discharge fromopenings 12 to circulate upwardly through the room in which the heateris located.

Thus the admission of a certain amount of fresh air into and through theheater tends to keep the air fresh and pure in the room in which theheater is located and said fresh air supplying the oxygen that isnecessarily consumed in the operation of the gaseous fuel burner 23. i

In the event that it is desirable or necessary to equip the heater witha vent for the purpose of carrying off products of combus tion from thegaseous fuel, burner, a metal duct such as 30 leads from the upper endof the radiant inclosing wall 28, said duct being carried through theupper portions of walls 17 and 18 and up through header H .and the spacein the wall above the latter (see Fig. 5). Thus provision is made forcarrying off any fumes or noxious gases that might be produced duringthe operation of the burner.

Tube 25 that forms a connection between the supply pipe P and valve 26of the burner is preferably formed of copperor similar soft metal inorder that it may be readily bent and adjusted to suit yariabledistances between the supply pipe and burner, and when the heater isbeing installed.

The ends of this flexible tubing are connecte d by suitably packedjoints 25 with the supply pipe P and the return elbow or fitting that isassociated with valve 26.

By the use of the flexible tube, much time. laborand consequent expensemay be saved in the installation of the heater for, by bending saidpipe, the connections may be easily and quickly made withoutthenecessity for' careful setting or roughing in of the gas supply pipe.

heater and thus enables the latter to be readilyconnected for use.

Thus it will be seen that I have provided a relatively simple andpractical wall heater 'which duringoperation is effective in producing acirculation of warm fresh air through the room in which it is locatedand the heater being of unitary structure so as to enable it to bereadilyinstalled. The construction ofthe heater is such that it can bereadily cleaned and maintained in a sanitary condition and as the burnerand radiants associated therewith are practically surrounded by threemetal walls, one or more of which may be coated or lined with sheetasbestos or the like, the danger of fire resulting from the use of theheater is elimi-' nated.

It willbe understood that minor changes in the size, form andconstruction of the various parts of my improved wall furnace maybe madeand substituted for those herein shown and described, without departingfrom the spirit of the invention, the scope of which is set forth in theappended claims.

I claim as my invention:

1. The combination with a building wall in the lower portion of which isformed a pocket and there being an opening in the floor beneath saidwall, which opening communicates. with the lower portion of said pocket,of a heating, appliance located in said pocket and comprising a faceplate, a housing secured to the rear side of said face plate andoccupying the rear portion of the space within said pocket the lower endof which housing is open, a second housing arranged on the rear side of.the face plate and spaced apart from the first mentioned housing, thelower end of the second mentioned housing being closed, a gaseous fuelburner arranged within the chamber in the lower portion of said secondmentioned housing,

I radiant heating elements disposed above said gaseous fuel burner, anda reflecting housing arranged to the rear of said radiant heatingelements. a

2. The combination with a building wall in the lower p'ortion of whichis formed a pocket and there being an opening in the floor beneathsaidwall, which OPQIlll'lgCOlTlmunicates with the lower portion of saidpocket, of a heating appliance located in said pocket and comprising aface plate, a housing secured to the rear side of said face plate andoccupying the rear portion of the space within said pocket the lower endofwhich housing is open, a second housing arranged on:the rear side ofthe face plate and spaced apart from the first mentioned .tioned housingbein housing, radiant heating housing, thelower end of thesecondmenlower portion of said second mentioned elements disposed abovesaid gaseous fue burner, a reflect- I closed, a geseous fuel burnerarranged wit in the chamber in the The flexible tube is furnished withthe ing housing arranged to therear of saidradiant heating elements anda' vent duct leading from the upper end of the housing that inclosessaid radiant heating elements.

3. The combination with a building wall in the lower portion of which isformeda pocket, there being an opening in the floor beneath said wall,which opening communicates with the lower portion of said pocket and agas supply ipe entering the lower portion of said poc et, of a heatingappliance located in said pocket and comprising a face plate, a housingsecured to the rear side of said face plate and occupying the rearportion. of the space within said pocket the lower end of which housingis open, a-

second housing arrang'ed on the rear side of the face plate and spacedapart from the first-mentioned housin the lower end of thesecond-mentioned 'ousing being closed, a gaseous fuelburner arrangedwithin the chamber in the lower portion of said secondmentioned'housing, radiant'heating elements dis osed. above said gaseous fuelburner, a re ecting housing arranged to the rear-of said radiant heatingelements and a tube of flexible material connecting the gas supply pipethat enters the lower end of said pocket with said gaseous fuel burner.I

4. The combination with a building Wall in the lower ortion of which isformed a pocket, there eing an opening in, the-floor beneath said wall,which opening communicates with the lower portion of said pocket and a'gas supply ipe entering the lower portion of said poc et, of a heatingappliance located in said pocket and comprising a face plate, a housingsecured to the rear side of said face platefand occupying the rearportion of the space within said pocket the lower end-of which housingis open,'a second housing arranged on. the rear side of the face lateand spaced apart from the first-mentioned housing, the lower end of thesecond-mentioned housing being closed, a gaseous fuel burner arrangedwithin the chamber in the lower portion of said secondmentioned housing,radiant heating elements diisiposed above said gaseous fuel burner, a reecting housing arranged to the .rear of said radiant heatingelements, atube of flexible material connecting the gas supply pipe that enters thelower end of said pocket with said gaseous fuel burner and a vent ductleading from theupper end of the housing that incloses said radiantheating ele ments.

5. In a wall furnace, a heating means, a

pair of air channels in said furnace, said channelsreceiving their airsupply from the bot-tom of the furnace, one air channel being in thedirect zone of the heat emanating from said means, and the other channeldischarging ventilating air through the upper end of the furnace, and anair exit for the first air channel located below the point of airdischarge from the second channel.

6. In a device as described, the combination of a base having anair-receiving port, a wall furnacehaving a passage communieating withsaid base port, a heating chain her in said furnace out of communicationwith said base port and containing a fire box spaced at its rear, top,and side walls from the adjacent walls of said heating chamber toprovide an air heating passage, means disposed above'said fire box fordischarging the heated air from the air heating passage, and a wallextending transversely of said furnace above said means and shaped toprovide an an exit for the first mentioned verse series of air ports, aheating chamber below said series of airport means allow; ing for theescape of heated air from said chamber at a point below and in proximityto said air ports, and an air-directing jacket beginning at the lowerend of said furnace, communicating with a source of ventilating air, andregistering with said air ports for the purpose of dischargingventilating air.

8. In a wall furnace, a. front wall having an upper transverseperforated portion for directing air upwardly, a heating chamber builtinto said furnace with its front wall projecting outwardly of saidperforated portion and having a perforated front wall for directing airoutwardly, means at the lower end of said furnace for allowing air topass upwardly into said chamber, and a continuous ventilating chamber atthe. rear-ofsaid heating chamber and having a common dividing partitiontherebetween, air being introduced into said ventilating chamber from apoint below the heating chamber.

9. The combination with a building wall in the lower portion of which isformed a pocket, there being provided an opening in the floor beneathsaid wall. said opening communicating with the lower portion of saidpocket, of a heating appliance located in said pocket, said heatingappliance having a face plate, a housing secured to the rear side ofsaid face plate and occupying the rear portion of the space within saidpocket, the lower end of said housing being open and communicating withthe opening in the/floor, the upper portion of said housingcommunicating with the room in which the heating appliance is located, aheat-reflecting housing arranged within said first housing and spacedtherefrom, and heating means positioned within said reflecting housmg. I

10. The combination with a building wall and the floor of aroom, saidfloor having an opening communicating with cool, fresh air, of a heatingappliance in connection with said wall, said appliance having an outerhousing communicating at its lower end with the opening in the fioor andat its upper end with the interior of the room in which the appliance islocated, a heat-reflecting housing arranged within thefirst housing andspaced therefrom, and a heat-- ing means positioned within saidreflecting housing, the first housing being separated at its lowerportion from said reflecting housing.

11. The combination with a building wall and the floor of a room, saidfloor having an opening communicating with cool, fresh air, of a heatingappliance in connection with said wall, said appliance having an outerhousing communicating at its lower end with the opening in the floor andat its upper end with the interior of the room in which the appliance islocated, a reflecting housing arranged within the first housing andspaced therefrom, a heatin means positioned Within said reflectinghousing, said reflecting housing communicating with the room, and a vcntconnected with the upper portion of said reflecting housing andcommunicating with the atmosphere.

12; In a heater of the class described, an outer housing communicatingat its lower end with fresh air and having a room exit port at its upperportion, a second housing positioned "within and spaced from said firsthousing and cou'imunicating at its lower and upper ends with the room inwhich the heater is located, a combustion chamber positioned within andspaced from said second housing and also communicating with the room,and a heating means positioned in said combustion chamber.

13. In a heater of-thc class described, an outer housing communicatingat its lower end with fresh all and having a room exit port at its upperportion, a second housing positioned within and spaced from said firsthousing and communicating at its lower and upper ends with the room inwhich the heater is located, a combustion chamber positioned within andspaced from said second housing and also communicating with the room, aheating means positioned in said combustion chamber, and a ventconnected with the upper portion of said combustion chamber andextending ihto the space. between the same and the second housing. andalso into the space between the second and first housings.

14. In a heater of the class described, the combination with the walland floor of a room, the floor having an opening communi: eating with asourceof fresh air, a. housing in connection with the wall andcommunicatin at its lower end with the opening in the our andat itsupper end with said room, a. second housm positioned and spaced fromsaid outer housing and com municating at its lower and upper ends withsaid room, a combustion chamber positioned within the second housing andalso com 10 municatin with the room, and a. heating {)neans positionedinsaid combustion chainer. I

In witness whereof he has hereunto set hi hand this 10th day of June,1926. i

JOHN S. ANDREWS.

